Hi Eugene, I proposed a solution for something similar, maybe it will help you.
http://sujitpal.blogspot.com/2011/05/custom-sorting-in-solr-using-external.html -sujit On Sat, 2011-11-05 at 16:43 -0400, Eugene Strokin wrote: > Hello, > I have a task which seems trivial, but I couldn't find any related > information from Solr documentation. > So I'm asking the community for an advice. > I have relatively big amount (about 25 Millions) of documents which are > describing products. > Those products could be rated by humans and/or machines. > The rating is nothing more but just "Like" kind of points. So if someone or > something likes a product it adds +1 to the total points of the product. > I was thinking I could just have an integer field in the document, and > increment it each time when Like event is fired, and just sort this field. > But, because Like event could come from external systems, I could > get literally thousands of such events in first few hours. And I'm not > sure that updating the document that often would be good. > This is the first question - May be there is another way to do such dynamic > rating? So more "Liked" products will be first in a search result. > > The second problem, that the client is asking to have time based search > results. For example those "Likes" should not boost the document if they > are a week old, a month old, etc. Ideally, they want to set the expiration > time dynamically, but if this is a problem, it is acceptable to have some > predefined time of expiration of those "Likes", but still we are going to > need at least a week and a month thresholds. > Second question, if this is possible at all to do using Solr, if so, how? > If not, what could you suggest? > > Thanks in advance, > any advice, information, anything are greatly appreciated. > > Eugene S.
